Braking device for portable logging roads



I. A. WILSON. BRAKING DEViCE FOR PORTABLE LOGGING ROADS.

1922. 3 SHEETS -SHEET I- gjnnminr [544014. 71 6 07 MPLICATION FILED JAN. 17, 1920- I. A. WILSON.

BRAKING DEVICE FOR PORTABLE LOGGING ROADS. APPLICATION mm JAN. 17, 1920.

Patented Feb. 14, 1922.

3 SHEETS-SHEET 3- U 5 W M Top "UNIT sTATss PATENT orrlcs.

rsaac A.- wrnson, or LAKEBAY, wasnrneron.

y BRAKING nnvronfsonronrannn LOGGING norms.

To all whom it nun "concern: 4 9

Be it known thatL ISAAC A. VVILsoN, a citizen of the United States, residin at Lakebay, in the county of Pierce and tate of VVashingt-on, have invented certain new and useful Improvements in Braking Devicesfor Portable Logging'Roads'; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to roadways and particularly to portable roadways for transporting logs, shingle bolts andth-e like. An object of this invention is to provide a quickly constructed roadway that can be easily constructed on the ground without importing thereto heavy and'cuinbersome material such as is very dilficult'to get into logging camps and inaccessible placesand to provide molds sotliat many rollers, having a normal weight-greatly in excess of that of the molds can be utilized for building these roadways such as making rollers for these roadways out ofi concrete or other plastic material in aimold on the ground. Ordinarily to carry a great number of rolls for building a logway or a way for carrying shingle bolts the weight of these rolls makes it very expensive of transportation owing to the inaccessibility often found in getting to logging camps and by making these molds for molding concrete rollers only a few molds need to be transported for making a multitude of rolls for logs. It is an object of this invention to provide such molds and thereby more easily and cheaply construct an eflicient logging way and at the same time construct a logging way which will be practicable where otherwise it might not be so. A further object of this invention is to provide a logging way made up of sections having log rollers mounted on individual sections in such a manner that it may be utilized over difl'erent contours of the earths surface. A further object of this invention is to make a log way of this character universal for delivering shingle bolts as well as logs and to handle these shingle bolts in a more satisfactory manner than they have been heretofore handled. A further object of this invention is to provide a Specification of Letters Patent.

Patented Feb. 14, 1922.

' Application filed January 17, 1920. Serial No. 352,124.

suspension bridge arrangement of sectional units carrylng rollers of this type and to provide means for fastening such suspension bridges to stumps, trees and other natural land marks that may be accessible. A further object of this invention is to provide a means for drawing'logs on a roadway of this character where gravity is not open. ative upon the logs in propelling them in the desired direction. A further object of -'this'invention is to provide a means for easily and quickly equalizing the speed of logs upon a roadway of this character and for checking the speed of logs upon such a roadway and for controllingthis checking means from a single point for various portions of said roadway. A further object of this invention is to provide a means of anchoring I a roadway of this character to natural land marks and natural growths that might be in the vicinity of the roadway. A further object of this invention is to utilize a roadway of this character to make it a selfportable arrangement by utilizing the sleds forcarrying the rollers to become cars operative upon said rollers and thereby providing means for loading parts of said roadway upon said cars and enablingeasier transportation. A further object of this invention is to provide a means for checking the speed of logs of roadways of this character both by operation upon the logs and by brake automatically operative in relation to the rollers upon which the logs are rolling and also by a frictional arrangement in relation to said rollers independent of positive brake. A further object of this invention is to provide means for anchoring sleds holding rollers for roadways of this type by providing holes within the sleds themtheir angularity and also providing for additional roller length at such turns and also providing for counter rollers on vertical pivots. A, further object of my invention is to provide an improved means for unloading logs from a roller roadway. lVith these and other objects in view as will become manifest to those versed in the art, my invention consists in the construction, the combination, and in details and arrangement or the parts as more particularly set forth, wherein; v

Figure l is a perspective of a continuous logway going over various contours upon a mountain side.

Figure 2 is an enlarged side elevation of a portion of the braking mechanism taken at point 2 of Figure 1.

Figure 3 is an enlarged plan taken at 3 on Figure 1, showing suspension cable mounts. Figure l is an enlarged section, showing a skid converted into a car for shingle bolts. Figure 5 is an enlarged perspective at 5 on Figure 1, showing a, snub line for an auxiliary brake.

Figure 6 is a perspective of operation going uphill, taken atpoint 6 on Figure 1.

Figure 7 is a section across a roller with log mounted thereon. a I

Figure 8 is a perspective view at a terminal and at a partial angular turn, showing the varying lengths oi rollers and the varying angularity and also the fiangless roller and double roller system and also brakes and dump.

Figure 9 is a section of a mold for makin a roller.

Figure 10 is a section of a roller with skid reversed and converted into a car for transporting.

Figure 11 is an enlarged detail of a suspension mount roll.

Figure 12 is an enlarged View of a switchback, taken at point marked 12 on Figure 1.

In constructing this roadway, I'transport or build on the ground a mold and sometimes a set of molds, such asis shown in Figure 9, depending upon the contour of the ground, sometimes I use a set of varying molds for different shaped rolls. I cast these rolls around a piece of pipe in these molds allowing the ends of the pipe to stand out beyond the roll as shown at a in Figures 4, 7, 9 and 10, and having a drum .7) and a V-shaped groove 0 and concavity at d to conform to the shape of the logs and flange at c, the magnitude of said flanges depending entirely upon the angularity at the place of mounting of the roller and also upon whether or not it is desired to utilize the said track both for shingle bolts and for logs and under other varying conditions. The ends a of the pipe are journaled in bearings f of skids The groove 0 in the roller is used for frictional engagement with a strap Strap i is mounted on one end fixedly with skid g and at the other end upon a lever A series of levers j are suitably joined together by means of a connecting rod, one end of which is attached to a cable 76 whichpasses toand around a drum Z. Fixedly mounted with druml, is a ratchet at having a suitable pawl a and also fixedly mounted with drtun Z is said cable 7cin a predetermined tautness.

The auxiliary cable 71; may also be mounted upon a drum or be'manually controlled and serves as a safety arrangement in the event of anything interfering with the operation of the brake straps i or the mechanism operating these straps and also serves for the purpose of a brake atsuch times as :it-vis more convenient "to utilize it, than :it is to utilize'the strap brakes. One end ofthiscable It may be securedto one of the skid members g and then alternately arranged upon opposite sidesiof the drum and thence woundupon a cable adapted tOubB manually operated so; that in case anything happens to the brakestraps z, tension canbeapplied to this cable h which willbind against the drum andtend to brake the same in the same unanner as the straps 2'. This auxiliary cable 71, may belocated upon. the opposite endofithe drum from the straps z. vThe skids g are anchored by .pins, 29 thronghholes Q and also bya guy rope 'v' to such meansas a stump s or a tree or other suitable land markswhen normally resting upon the ground; butwhen for instance :it-is desired to suspend'these skids across a ravine for instance, the skids, being coupled together by couplings 'u, are

held in: suspension by, guyso Vmounted or snubbed upon treesor stumps or other suitable landings or anchorings. On the level or at an incline at iwhichgravity does not effect thenmovement of the logs inthe desired direction, adraw banw brlikemeans is put behind the logs and the logs are manually orby horsesor otherpowerrp'ushed over the rollers; Gravity normally'carries .thelogs downward and when the hills are too steep, I use anwangularitylelement as shown in Figure 12and; at 12in Figure 1.

In such an element to overcome theangularity ofthe logs and changes in their an gularitylnse upright rollers or pivotally mounted on vertical pivots at a portion of this angle vandalsoutilize-a roller having a flange only'on one side. The skids g as shown in Figure-1O are mounted upon a set of rollersin which the skids form a carwith the rollers forming the wheels 'to easily deport the skids and the rollers inrchanging the position and placing of :these tracks and rollers. In cases whererit is desired to transport shingle bolts insteadof logs I ruse-a car 1) in which I 1 may utilize one of the skids g. V a

"My angularity changing means may be called a form of Switchback, somewhat similar to a narrowedVform, whereby-logs on a steep side hill may. be carrieddown by being moved in azigzag roadwaydown the What I claim is: V In a log roadway, spaced skids, rollers mounted between said skids, said rollers 15 having grooves, brake straps within said grooves, means connecting said straps, a cable attached to the connecting means, a drum for winding said cable and a ratchet and pawl attached to the drum to check 20 backward rotation of the same.

In testimony whereof I affix my signature.

ISAAC A. WILSON. 

